Siemens SINAMICS S210 - Power Unit: Monitoring U

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Acknowledge: IMMEDIATELY

Cause: The power has detected a ground fault.

Possible causes:

- ground fault in the power cables.

- ground fault at the motor.

- CT defective.

- when the brake closes, this causes the hardware DC current monitoring to respond.

- short-circuit at the braking resistor.

- the closed-loop circulating current control for devices connected in parallel (r0108.15 = 1) is either too slow or has been

set too fast.

Note:

For power units, a ground fault is also emulated in r3113.5.

Fault value (r0949, interpret decimal):

- the hardware DC current monitoring has responded.

- short-circuit at the braking resistor.

> 0:

Absolute value, total current amplitude [20479 = r0209 * 1.4142].

Remedy: - check the power cable connections.

- check the motor.

- check the CT.

- check the cables and contacts of the brake connection (a wire is possibly broken).

- check the braking resistor.

For parallel switching devices (r0108.15 = 1) the following additionally applies:

- check the ground fault monitoring thresholds (p0287).

- check the setting of the closed-loop circulating current control (p7036, p7037).

F30022 Power unit: Monitoring U_ce

Message value: Fault cause: %1 bin

Drive object: All objects

Reaction: OFF2

Acknowledge: POWER ON

Cause: In the power unit, the monitoring of the collector-emitter voltage (U_ce) of the semiconductor has responded.

Possible causes:

- fiber-optic cable interrupted.

- power supply of the IGBT gating module missing.

- short-circuit at the power unit output.

- defective semiconductor in the power unit.

Fault value (r0949, interpret binary):

Bit 0: Short-circuit in phase U

Bit 1: Short circuit in phase V

Bit 2: Short-circuit in phase W

Bit 3: Light transmitter enable defective

Bit 4: U_ce group fault signal interrupted

Siemens SINAMICS S210 - Power Unit: Monitoring U_Ce